1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
#! /bin/bash -eu
# Generate xlat .in file based on the existing file and Linux UAPI headers.
#
# Copyright (c) 2018-2020 The strace developers.
# All rights reserved.
#
# SPDX-License-Identifier: LGPL-2.1-or-later
warn()
{
printf >&2 '%s: %s\n' "$0" "$*"
}
fatal()
{
warn "$@"
exit 1
}
usage()
{
s="${0//?/ }"
cat >&2 <<-EOF
$0 -f VAL_PRINT_FMT \\
$s -p REGEXP_PATTERN \\
$s -d LINUX_SRC_DIR \\
$s -c COMMON_DEFS_GLOB_PATTERN \\
$s -a ARCH_DEFS_FILE \\
$s < xlat/xlat_file_name.in
Examples:
$0 -f 'd' -p 'MADV_' -d '/path/to/linux' -c 'asm-generic/mman-common.h' -a 'asm/mman.h' < xlat/madvise_cmds.in
$0 -f '#x' -p '_?MAP_' -d '/path/to/linux' -c 'asm-generic/mman*.h' -a 'asm/mman.h' < xlat/mmap_flags.in
$0 -f '#o' -p '[_OF]' -d '/path/to/linux' -c 'asm-generic/fcntl.h' -a 'asm/fcntl.h' < xlat/open_mode_flags.in
$0 -f 'u' -p 'SO_' -d '/path/to/linux' -c 'asm-generic/socket.h' -a 'asm/socket.h' < xlat/sock_options.in
EOF
exit 1
}
VAL_PRINT_FMT=
REGEXP_PATTERN=
COMMON_DEFS_GLOB_PATTERN=
ARCH_DEFS_FILE=
LINUX_SRC=
comment_re='[^/]*\/\*.*\*\/.*'
comment_glob='*/\**\*/*'
while [ 0 -lt "$#" ]; do
case "$1" in
-p)
shift
REGEXP_PATTERN="$1"
;;
-d)
shift
LINUX_SRC="$1"
;;
-c)
shift
COMMON_DEFS_GLOB_PATTERN="$1"
;;
-a)
shift
ARCH_DEFS_FILE="$1"
;;
-f)
shift
VAL_PRINT_FMT="$1"
;;
-[h?])
usage
;;
-*)
fatal "$1: unknown option"
;;
*)
fatal "$1: unexpected argument"
;;
esac
shift
done
for v in \
VAL_PRINT_FMT \
REGEXP_PATTERN \
COMMON_DEFS_GLOB_PATTERN \
ARCH_DEFS_FILE \
LINUX_SRC \
; do
eval [ -n \"\$$v\" ] || fatal "$v has not been specified"
done
printf "/* Generated by %s -f '%s' -p '%s' -c '%s' -a '%s' */\\n" \
"$0" "$VAL_PRINT_FMT" "$REGEXP_PATTERN" \
"$COMMON_DEFS_GLOB_PATTERN" "$ARCH_DEFS_FILE"
sed -En '/^\/\* Generated by .*\*\//d;s/^((# .*|'"$comment_re"'|'"$REGEXP_PATTERN"'[^[:space:]]*).*)?$/\2/p' |
uniq |
while read name_ rest; do
# Empty lines, comments, and "# " directives are passed verbatim.
case "$name_ $rest" in
\ )
echo
continue ;;
\#\ *|${comment_glob})
printf '%s\n' "$name_ $rest"
continue ;;
esac
sed -En 's/#[[:space:]]*define[[:space:]]+('"$name_"')[[:space:]]+([x[:xdigit:]]+).*$/\2\t\1/p' \
$LINUX_SRC/include/uapi/$COMMON_DEFS_GLOB_PATTERN |
sort -n | {
def=
name=
read def name ||:
if [ -n "$def" ]; then
warn "$name_ is defined to $def"
else
warn "No def for $name_"
name="$name_"
fi
grep -oEH '#[[:space:]]*define[[:space:]]+'"$name"'[[:space:]]+(0x[[:xdigit:]]+|[[:digit:]]+)' \
$LINUX_SRC/arch/*/include/uapi/$ARCH_DEFS_FILE |
sed -En 's|^[^#]*/arch/([^/]+)/include/uapi/[^:]*:#[[:space:]]*define[[:space:]]+'"$name"'[[:space:]]+([^[:space:]]+)([[:space:]].*)?$|\1\t\2|p' |
sed s/parisc/hppa/ |
sort |
awk -vname="$name" -vdef="$def" -vfmt="$VAL_PRINT_FMT" '
# Like strtonum, but also supports octal and hexadecimal
# representation.
# Taken from https://www.gnu.org/software/gawk/manual/html_node/Strtonum-Function.html
function mystrtonum(str, ret, n, i, k, c)
{
if (str ~ /^0[0-7]*$/) {
# octal
n = length(str)
ret = 0
for (i = 1; i <= n; i++) {
c = substr(str, i, 1)
# index() returns 0 if c not in string,
# includes c == "0"
k = index("1234567", c)
ret = ret * 8 + k
}
} else if (str ~ /^0[xX][[:xdigit:]]+$/) {
# hexadecimal
str = substr(str, 3) # lop off leading 0x
n = length(str)
ret = 0
for (i = 1; i <= n; i++) {
c = substr(str, i, 1)
c = tolower(c)
# index() returns 0 if c not in string,
# includes c == "0"
k = index("123456789abcdef", c)
ret = ret * 16 + k
}
} else if (str ~ \
/^[-+]?([0-9]+([.][0-9]*([Ee][0-9]+)?)?|([.][0-9]+([Ee][-+]?[0-9]+)?))$/) {
# decimal number, possibly floating point
ret = str + 0
} else {
ret = "NOT-A-NUMBER"
}
return ret
}
BEGIN {
d = mystrtonum(def)
}
{
i = mystrtonum($2)
if (i == d) next
if (a[i])
a[i] = a[i] " || defined __" $1 "__"
else
a[i] = "defined __" $1 "__"
}
END {
iftext = "#if"
for (i in a) {
printf("%s %s\n%s\t%" fmt "\n", iftext, a[i],
name, i)
iftext = "#elif"
}
if (iftext != "#if")
print "#else"
if (def == "")
printf("%s\n", name)
else
printf("%s\t%" fmt "\n", name, d)
if (iftext != "#if")
print "#endif"
}' |
sed -e 's/defined __arm64__/& || defined __aarch64__/g' \
-e 's/defined __x86__/defined __x86_64__ || defined __i386__/g'
}
done
|
